diff --git a/epub/Eofficium.pl b/epub/Eofficium.pl
index 21f299c998b..181cdc70bdd 100755
--- a/epub/Eofficium.pl
+++ b/epub/Eofficium.pl
@@ -68,6 +68,7 @@ package horas;
 
 #*** collect standard items
 require "$Bin/do_io.pl";
+require "$Bin/../DivinumOfficium/SetupString.pl";
 require "$Bin/horascommon.pl";
 require "$Bin/dialogcommon.pl";
 require "$Bin/Ewebdia.pl";
diff --git a/standalone/tools/epubgen2/EofficiumXhtml.pl b/standalone/tools/epubgen2/EofficiumXhtml.pl
index 19821e43650..e67ecdac1dc 100755
--- a/standalone/tools/epubgen2/EofficiumXhtml.pl
+++ b/standalone/tools/epubgen2/EofficiumXhtml.pl
@@ -74,6 +74,7 @@ package main;
 }
 
 require "$Bin/do_io.pl";
+require "$Bin/../DivinumOfficium/SetupString.pl";
 require "$Bin/horascommon.pl";
 require "$Bin/dialogcommon.pl";